Permanent waving device



Gv. DECKER PERMANENT wAvING DEVICE Filed Deo. 5, 1956 Dec. 13, 1938.

Patented Dec. 13, 1938y UNITED STATES PERMANENT WAVING DEVICE GeorgeDecker, Cincinnati, Ohio, assignor to Adolph Kietz, Bellevue, Wash., andPhil D. Spaeth, Cincinnati, Ohio Application December 3, 1936, SerialNo. 114,029

6 Claims.

The invention relates to a heater designed for use in permanent wavingand particularly in permanent waving of the croquignole type.

An object of the invention is to provide a superior heater of the heatstorage type which is adapted to be applied transversely of the Woundcurl and to partially surround the same. A further object is to providefor storing the heat in the jaws which embrace the curl and to pro- Videjaws of such coniiguration that they may be readily applied inconnection with conventional croquignole apparatus and in which moreheat is stored in one portion of the jaw than in the remainder wherebysuch portion becomes in effect a reservoir which will supply heat tothose portions which have less heat holding capacity. A further objectis to provide jaws having a large heat storage capacity Vin one portionthereof whereby another portion may be relatively thin so that it willnot be necessary to employ very high initial temperatures in order toprovide a sufficient total heat to produce a satisfactory wave. Afurther object is to provide jaws which while much heavier in oneportion than another, will nevertheless supply heat substantiallyuniformly'to all portions of the curl contacted by the heater. A stillfurther object is to provide in connection with jaws of constructionsindicated above, carrying means which may be attached directly theretowithout being damaged and which will not excessively conduct heat awayfrom the jaws and to provide grips of heat insulating constructionwhereby the device may be manipulated without discomfort to theoperator.

Other and more limited objects will be in part apparent and in partpointed out hereinafter in connection with the accompanying drawingwherein Fig. 1 is a side elevation of a device embodying the invention;Fig. 2 is a transverse section drawn to double size and taken centrallyof Fig. 1; Fig. 3 is a fragmentary section of a modied form whereingreater heat storage capacity is provided in the upper part than in theform of Fig. 1; Fig. 4 is a section on the line 4-4 of Fig. 3; Fig, 5 isa fragmentary section of a further modified form wherein means areprovided for substantially equalizing the heat supply to the curlcontacting surface 50 and Fig. 6 is a section corresponding to the lineIi-5 of Fig. 5.

In the drawing the numeral ill indicates substantially semi-crescentshaped, elongated jaws adapted to partially surround a curl wound 55croquignole fashion with conventional croquignole apparatus. Attached tothe jaws I9 by suitable screws II are arms I2 which are composed ofsheet metal of thin gauge and formed in rectangular shape. These armscomprises a flat portion Iza which extends longituf dinally of the jawand from the ends of'which channel shaped elements I2b extend away fromthe jaws. The elements I2b merge with a hat portion I2c and are providedwith ears I2d which Y are pivoted together as indicated at I3. The 10portions I2c are provided with struck up flanges I4 which are receivedin and hold a spring I5 which constantly urges the jaws toward eachother. Attached to the portions I2c of the arms I2 are heatinsulating'grips I6 which are pro- V15 vided on their inner surfaceswith bosses I1 whereby the grips are spaced from the arms thus providingadditional heat insulation. By reason of the fact that the arms I2 arecomposed of metal, they may be safely attached to the. jaws 20 I0. Theyare channel shaped to afford adequate strength and are composed of thingauge stock whereby they will not excessively conduct heat away from thejaws. The crescent shaped jaws render it easy to place the device on acurl 25 wound on conventional croquignole apparatus and afford at theportions adjacent the arms a heat holding capacity which would beunobtainable if the jaws were of equal thickness throughout. Thisstorage feature makes unnec- 30 essary the high initial heat which wouldbe required if the jaws were of equal thickness throughout and of athickness not to interfere with the use of conventional croquignoleapparatus.

In Figs. 3 and 4 I have shown a modified form which differssubstantially only in that the jaws I8 thereof have a considerablygreater quantity of material at the top whereby suicient heating may besecured by the use of a lower in- 40 itial temperature.

In Figs. 5 and 6 I have shown a further modified form wherein the jawsI9 are of substantially the same cross section as those I8 of theprevious form but in which means are provided for maintaining asubstantially equal temperature in all portions which contact the curl.This latter means comprises a series of longitudinal grooves 20 formedin the inner surfaces of the jaws and dening therebetween relativelynarrow portions in contact with the liners 2i which contact the curl orits covering. The liners 2I may be made of relatively thin sheet metaland attached to the heavier portions of the jaws by terminal flanges..2.2 and 23 received in grooves 55 formed in the jaws. The size andshape of the grooves 20 will vary according to the material of which thejaws are constructed and the cross sectional shape thereof. It isrelatively easy, however, either by theoretical or practical methods toascertain the approximate shape which the grooves should take in orderto secure a substantially even temperature in all portions of the curlcontacting surface.

While I have shown and described the present preferred embodiments ofthe invention, I do not wish to be limited to the details of thedisclosure but only in accordance with the; appended claims and theprior art.

Having thus described my invention, what I claim is:

l. A heat storage type of heater adapted to be applied transversely to acurl to be heated and comprising a pair of elongated, heat retaining andheat conducting jaws, each being substantially semi-crescent shaped incross section, each of said.

jaws being carried by one of a pair of arms, said arms being attached tothe thick edges ofL said jaws, pivoted together and spring, pressed tourge said jaws toward each other and heat insulating grips carried bylsaid arms and adapted to. be grasped by an operator for separating saidjaws when the device is to be applied to. a curl.

2. A heat storage type of heater adapted to be applied transversely to acurl to` be heated and comprising a pair of elongated, heat retainingand heat conducting jaws, each being substantially semi-crescent shapedin cross section, each of said jaws being carried by one of apair ofarms, said arms being attached to the thick edges of said jaws, piVo-tedtogether and spring pressed to urge said jaws toward each otherand heatinsulating grips carried by said arms and adapted to be grasped byanoperator fory separatingy said jaws when the device is to be appliedto a curl,

Vsaid arms being formed of thin sheet metal bent to channel form wherebytc provide a construction which can be directly connected to thejawswithout being damaged, which` has adequate strength and which conducts;only a smallamount of heat away from the jaws.

3. A heat storage type of heater adapted tov be applied transversely toa curl to be heated and comprising a pair of elongated, heat retainingand heat conductingY jaws, each being curved` to conform to the curl andin cross-section, tapering toward a terminal edge, said jaws bei-ngthickened at the other edge whereby to provide heat storage capacity inthat region, an armV secured to each of said jaws and carrying a heatinsulating grip, said arms being pivoted together and spring meansurging said jaws toward each other, each of said arms comprising aplurality of spaced portions, each being channel shaped and composed ofthin sheet metal whereby to afford strength and desirable heat resistingand transmitting properties.

4. A heat storage type of heater adapted to be applied transversely to acurl to be heated and comprising a pair of elongated, heat retaining andheat conducting jaws, each being curved to conform to the curl and incross-section, tapering toward a terminal edge, said jaws beingthickened at the other edge whereby to provide heat storage capacity inthat region, an arm secured to each of said jaws and carrying a heatinsulating grip, said arms being pivoted together and spring meansurging said jaws toward each other, the principal part of the heatstorage capacity of said jaws being concentrated at one side of a planetangent to a curl enclosed thereby.

5. A heat storage type of heater adapted to be applied transversely to acurl to be heated and comprising a pair of elongated, heat retaining andheat conducting jaws, each being curved to conform to the curl and incross-section, tapering toward a terminal edge, said jaws beingthickened at the other edge whereby to provide heat storage capacity inthat region, an arm secured to each of said jaws and carrying a heatinsulating grip, said arms being pivoted together and spring meansurging saidy jaws toward each other, and said jaws being provided attheir curl engaging faces each with a continuous portion of heatconductive material, and such portions being connected with the mainheat storage portions of said jaws. by relatively narrow heat conductingportions.

6. A heat storage type of heater adapted to be applied transversely to acurl to be heated and comprising a pair of elongated, heat retaining andheat conducting jaws, each being curved to conform to the curl and inVcross-section, tapering toward a terminal edge, saidv jaws beingthickened at the other edge whereby kto provide Vheat storage capacityin that region, an arm secured to each of said jaws and carrying a heatinsulating grip, said arms being pivoted together and spring meansurging said jaws toward each other, the principal part of the heatstorage capacity of said jaws being concentrated at one side of a planetangent to a curl enclosed thereby, and said jaws being provided attheir curl engaging faces each with a continuous portion of heatconductive material, and such portions being connected with the mainheat storage portions of said jaws by relatively narrow heat conductingportions.

GEORGE DECKER.

